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Corrigendum to“Temporal assembly patterns of microbial communities in three parallel bioreactors treating low-concentration coking wastewater with differing carbon source concentrations”[Journal of Environmental Sciences,Volume 137,March 2024,Pages 455-468]

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Journal of Environmental Sciences 2024年第3期36卷 701-702页

作者： Weijia Li Yu Xia Na Li Jie Chang Jing liu Pei Wang xuwen He School of Chemical and Environmental Engineering China University of Mining and Technology-BeijingBeijing 100083China

The authors regret that the first line of Fig.7 has an extra“toluene”.The correct Fig.7 is provided as below.

关键词： wastewater source carbon

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Multi-scale Feature Fusion Extraction Structure for the Leather Defect Detection Algorithm 6

Multi-scale Feature Fusion Extraction Structure for the Leat...

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6th IEEE International Conference on Pattern Recognition and Artificial Intelligence, PRAI 2023

作者： He, xuwen Li, Hao Huang, Zihan Xiong, Xiaorui liu, Yifan Yao, Yuting Wuhan Polytechnic University School of Mathematics and Computer Science Wuhan China

ISBN: (纸本)9798350325485

Detection of surface defects using computer vision is a pivotal technology for achieving intelligent manufacturing. Leather products are one of the most widely traded goods in the world, and automatic identification, localization, and detection of surface defects in leather are indispensable for achieving intelligent manufacturing of leather products. This research paper proposes FG-DETR, a multi-scale feature fusion extraction structure for small target detection algorithms. Given the recent success of deep learning methods in various related fields and that certain defects and flaws in leather pictures in our dataset are relatively small. FG-DETR is based on DETR with some improvements as follows, Initially, DETR's ResNet50 network performs feature extraction on the original image and produces four scales of feature maps. Second, we apply a modified Feature Pyramid Network (FPN) to downsample and upsample the four scales of feature maps, followed by the fusion and output of a single feature map. A Gaussian kernel and output then process the fused feature maps as the final feature maps. Finally, the feature maps are merged with the position encoding information and combined into the Transformer encoder-decoder architecture, resulting in the detection outcomes through the Position-wise Feed-Forward Networks (FFN). In our leather dataset, the FG-DETR model is more effective in detecting small targets than DETR, as our leather images are large, and the original DETR is nearly ineffective for images with relatively small defects. The average detection accuracy of medium and large targets also improved, with a 7.6 percentage point improvement at AP50. The experimental findings demonstrate that the multi-scale feature fusion extraction structure significantly enhances the detection accuracy of DETR. © 2023 IEEE.

关键词： Computer vision

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Impact of Oligo(Ethylene Glycol) Side Chains on the Thermoelectric Properties of Naphthalenediimide-Dialkoxybithiazole Polymers

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ACS MATERIALS LETTERS 2024年第4期6卷 1207-1215页

作者： Yang, xuwen Ye, Gang Tran, Karolina liu, Yuru Cao, Jiamin Dong, Jingjin Portale, Giuseppe liu, Jian Zhang, Ping Loi, Maria Antonietta Chiechi, Ryan C. Koster, L. Jan Anton Univ Groningen Zernike Inst Adv Mat Nijenborgh 4 NL-9747 AG Groningen Netherlands Univ Groningen Stratingh Inst Chem Nijenborgh 4 NL-9747 AG Groningen Netherlands Hunan Univ Sci & Technol Sch Chem & Chem Engn Key Lab Theoret Organ Chem & Funct Mol Minist Educ Xiangtan 411201 Peoples R China Nanjing Tech Univ Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Key Lab Flexible Elect KLOFE Nanjing 211816 Jiangsu Peoples R China Nanjing Tech Univ Inst Adv Mat IAM Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Nanjing 211816 Jiangsu Peoples R China Chinese Acad Sci Changchun Inst Appl Chem State Key Lab Polymer Phys & Chem Changchun 130022 Jilin Peoples R China Jiangxi Univ Sci & Technol Sch Elect Engn & Automat Ganzhou 341000 Jiangxi Peoples R China Hubei Univ Sch Mat Sci & Engn Key Lab Green Preparat & Applicat Funct Mat Hubei Key Lab Polymer Mat Wuhan 430062 Peoples R China North Carolina State Univ Dept Chem Raleigh NC 27695 USA

Organic thermoelectric materials have garnered significant interest as promising candidates for energy harvesting applications. In recent years, ethylene-glycol side-chain engineering in organic semiconductors has gradually become an efficient approach to boost the performance of organic thermoelectrics. Although this strategy is widely utilized, the impact of their volume and branching structure remains unknown. This contribution describes a trade-off phenomenon between the oligo(ethylene glycol) (OEG) side chains and thermoelectric properties based on the n-type doped low-bandgap conjugated polymers, achieved through the modification of the volume and structure of side chains. Three conjugated polymers comprising a naphthalenediimide-dialkoxybithiazole backbone and different linear length or branched OEG side chains exhibit good host/dopant miscibility after doping. We find that, in the linear OEG side-chain-based polymers, the increased volume of side chains slightly influences the planarity of backbones, thereby leading to similar and satisfactory thermoelectric performances. The high fraction of side chains does not consistently yield enhanced performance, as the branched OEG side-chain introduces steric hindrance. Consequently, the accordingly conjugated backbones become less planar and rigid, resulting in critical molecular packing changes and low charge carrier mobility and doping efficiency and thus low thermoelectric performance. Our work provides a unique insight into the fundamental understanding of the relationship between molecular packing and thermoelectric properties and guides the future rational design of efficient n-type organic semiconductors.

关键词： Carrier dynamics Conjugated polymers Doping Polymers Thin films

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One-Pot Construction of β-Selective Quinolines with γ-Quaternary Carbon from Vinylquinolines with Active Ylides via Pd/Sc/Bronsted Acid Co-Catalysis

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ACS CATALYSIS 2023年第10期13卷 6509-6517页

作者： Song, Longlong Xiong, Lulu Ni, Dan Chen, Weixiong Ji, Jian Xue, Jian Chen, xuwen Wu, Xiang He, Xiao liu, Shunying East China Normal Univ Shanghai Engn Res Ctr Mol Therapeut & New Drug Dev Sch Chem & Mol Engn Shanghai 200062 Peoples R China New York Univ Shanghai New York Univ East China Normal Univ Ctr Computat Shanghai 200062 Peoples R China

Vinyl-substituted N-heterocycles, as more challenginginert olefinswith more stable reactivity, have brought about widespread attentionin the reaction of aza-Michael addition or reduction coupling ***, we report a [Pd-(eta(3)-C3H5)-Cl](2)/Sc-(OTf)(3)-catalyzed catalytic processaccelerated by Bronsted acids with a beta-selective aza-Michaeladdition to yield a gamma-quaternary carbon from vinyl-substitutedquinolines, diazos, and anilines/alcohols in one pot. The generationof anhydride analogues from Bronsted acid and the counter anion(OTf-) of Lewis acid promotes the activation ofthe corresponding Lewis acid and the nearly quantitative *** pi-cation and coordination interactions play pivotal rolesin the activation of the vinyl-quinoline substrates by the activatedLewis acid Sc-(OTf)(3). The control mechanistic evidence andDFT calculations presented a Pd/Sc/Bronsted acid co-catalyzedaddition mechanism. The triple co-catalytic system provides a strategyfor the activation of vinyl-quinolines with a linear selectivity containing gamma-quaternary carbon, and the developed method shows a broadsubstrate scope varying from alkyl/aryl alcohols and amines whichprovides a general and rapid strategy for the quinoline-based diverselibrary construction.

关键词： Pd Sc co-catalysis one-pot reaction vinylquinolines active ylide quaternary carbon

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Design of a new scintillator-based fast ion loss detector on the HL-2A tokamak

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JOURNAL OF INSTRUMENTATION 2024年第10期19卷 P10013-P10013页

作者： Han, Yuxiao Xie, Jinlin Zhang, Jie He, Xiaofei Wang, Yongqing liu, Linzi Xu, Hongbing Zhan, xuwen liu, Kuancheng Zhang, Yipo Shi, Zhongbing Chen, Wei Zhong, Wulv Xu, Min Zhuang, Gea Univ Sci & Technol China Dept Plasma Phys & Fus Engn Hefei Anhui Peoples R China Southwestern Inst Phys Chengdu Sichuan Peoples R China

A new scintillator-based fast ion loss detector (FILD) has been devised for the HL-2A tokamak, with the objective of discerning the temporal evolution of energy and pitch angle among lost fast ions. A code named FILD Simulation (FSC) has been developed to assist in the design of the detector head and the interpretation of experimental data. By optimising the geometric design, the resolutions of energy and pitch angle are optimised to 5 keV and 3 degrees, respectively. A branched imaging fiber bundle is used to relay the fluorescence image on the scintillator to two distinct instruments. One of these is a high-speed camera, while the other is a silicon photomultiplier tube (SiPM) array with a sampling rate of up to 1 MSamples/s. This configuration enables the attainment of superior temporal and spatial resolution, as well as high photon sensitivity.

关键词： Nuclear instruments and methods for hot plasma diagnostics Plasma diagnostics- high speed photography Plasma diagnostics- probes Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)

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Influences of Community Coalescence on the Assembly of Bacterial Communities of the Small-Scale Complex Aquatic System from the Perspective of Bacterial Transmission, Core Taxa, and Co-occurrence Patterns

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MICROBIAL ECOLOGY 2024年第1期87卷 145页

作者： Xu, Huimin Zhang, Yi Fan, Dingyue Meng, Shunlong Fan, Limin Song, Chao Qiu, Liping Li, Dandan Fang, Longxiang liu, Zhuping Bing, xuwen Chinese Acad Fishery Sci Freshwater Fisheries Res Ctr Wuxi 214081 Peoples R China Minist Agr & Rural Affairs Lab Qual & Safety Risk Assessment Aquat Prod Envir Wuxi 214081 Peoples R China Taihu Basin Author Minist Water Resource Water Conservancy Dev Res Ctr Shanghai 200438 Peoples R China Shanghai Ocean Univ Coll Fisheries & Life Sci Shanghai 201306 Peoples R China

Recirculating aquaculture and aquaponics are considered sustainable aquaculture models playing important roles in animal-derived protein supply. In these aquaculture systems, microorganisms are crucial for the system stability. The community coalescence by mixing substances and microorganisms from various microhabitats under hydraulic forces is important for shaping the bacterial communities in these small-scale complex systems. However, the influences of community coalescence on bacterial communities remain rarely revealed in these systems. In this study, aquaponics (APS) and recirculating aquaculture (RAS) systems were set up to explore the bacterial community coalescence across different microhabitats, including water, fish feces, biofilter biofilms, and plant rhizosphere environment. Our results showed that diversity and compositions varied across different microhabitats in both systems. However, bacterial transmissions across these microhabitats differed between systems. The core microbiome of the RAS and APS were formed under community coalescence with the highest contribution of bacterial taxa derived from the fish feces. Nevertheless, the plant rhizosphere bacterial community also contributed to the core microbiome of the APS. Furthermore, the core taxa showed a higher average degree than the other nodes in the bacterial community networks in all microhabitats except for the plant rhizosphere environment, implying the important roles of core taxa in maintaining these bacterial community networks. Our results provide new insights into the assembly of bacterial communities under community coalescence in the artificial aquatic ecosystems comprising complex microhabitats, which is vital for developing microbial solutions for regulating the microbial communities to improve system performance in the future.

关键词： Aquaponics Microhabitats Community coalescence Bacterial transmission Core taxa Co-occurrence network

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Cascade nanozymatic network mimicking cells with selective and linear perception of H2O2

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CHEMICAL SCIENCE 2023年第24期14卷 6780-6791页

作者： Zhu, Caixia Zhou, Zhixin Gao, Xuejiao J. Tao, Yanhong Cao, xuwen Xu, Yuan Shen, Yanfei liu, Songqin Zhang, Yuanjian Southeast Univ Sch Chem & Chem Engn Med Sch Jiangsu Engn Lab Smart Carbon Rich Mat & DeviceJi Nanjing Peoples R China Jiangxi Normal Univ Coll Chem & Chem Engn Nanchang 330022 Peoples R China

A single stimulus leading to multiple responses is an essential function of many biological networks, which enable complex life activities. However, it is challenging to duplicate a similar chemical reaction network (CRN) using non-living chemicals, aiming at the disclosure of the origin of life. Herein, we report a nanozyme-based CRN with feedback and feedforward functions for the first time. It demonstrates multiple responses at different modes and intensities upon a single H2O2 stimulus. In the two-electron cascade oxidation of 3,3 ',5,5 '-tetramethylbenzidine (TMB), the endogenous product H2O2 competitively inhibited substrates in the first one-electron oxidation reaction on a single-atom nanozyme (Co-N-CNTs) and strikingly accelerated the second one-electron oxidation reaction under a micellar nanozyme. As a proof-of-concept, we further confined the nanozymatic network to a microfluidic chip as a simplified artificial cell. It exhibited remarkable selectivity and linearity in the perception of H2O2 stimulus against more than 20 interferences in a wide range of concentrations (0.01-100 mM) and offered an instructive platform for studying primordial life-like processes.

关键词： Oxidation

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Development of an Interactive Medical Knowledge Graph Based Tool Set 10

Development of an Interactive Medical Knowledge Graph Based ...

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10th International Conference on Information Technology and Quantitative Management, ITQM 2023

作者： Xu, Xiaowei Wang, xuwen Wu, Meng Ma, Hetong Shen, liu Li, Jiao Institute of Medical Information and Library Chinese Academy of Medical Sciences Peking Union Medical College Beijing100020 China Key Laboratory of Medical Information Intelligent Technology Chinese Academy of Medical Sciences Beijing100020 China

The field of clinical research has reached a turning point in terms of the range and diversity of available data and their potential to improve human health and well-being. However, due to discipline-specific variances in terminology and representation, the data is often compartmentalized, disorganized, and inaccessible to a broad audience. In response to these challenges, we designed and evaluated a pilot knowledge graph-based MedKaaS tool capable of integrating existing clinical datasets and translating those data into insights intended to augment human reasoning and accelerate scientific research. In this paper, we present the architecture and performance of our system, which has been applied to several real-world use cases in collaboration with subject-matter specialists. The MedKaaS Tools are actively developed, with regular updates to performance and features. Our future plans include developing a more user-friendly interface and expanding the visualization capabilities for knowledge exploration. © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://***/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Tenth International Conference on Information Technology and Quantitative Management.

关键词： Clinical research

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Surface interaction mechanisms of air bubbles, asphaltenes and oil drops in aqueous solutions with implications for interfacial engineering processes

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JOURNAL OF COLLOID AND INTERFACE SCIENCE 2023年第1期647卷 264-276页

作者： Yang, Diling Zhao, Ziqian Gong, Lu Sun, Yongxiang Peng, xuwen Peng, Qiongyao Wang, Tao liu, Qi Zhang, Hao Zeng, Hongbo Univ Alberta Dept Chem & Mat Engn Edmonton AB T6G 1H9 Canada

Hypothesis: Surface interactions of bubbles and oil with interface-active species like asphaltenes influence many interfacial phenomena in various engineering processes. It holds both fundamental and practical significance to quantitatively characterize these ***: The surface forces of air bubbles, asphaltenes and asphaltenes-toluene droplets in various aqueous solutions have been quantified using an integrated thin film drainage apparatus and an atomic force microscope coupled with bubble probe. The effects of asphaltenes concentration, pH, salinity, Ca2+ ions and surfactants have been ***: Hydrophobic interaction drives attachment of bubbles and asphaltenes surfaces or oil droplets under high salinity condition. Increasing asphaltenes concentration in oil droplets enhances their hydrophobic attraction with bubbles due to strengthened asphaltenes adsorption and aggregation at oil-water interface. Increasing pH weakens the hydrophobic interaction as oil surfaces become more negatively charged and less hydrophobic. Under low salinity condition, strong electrical double layer and van der Waals repulsion inhibits the bubble-oil droplet contact. Introducing Ca2+ ions and surfactants leads to strong steric repulsion, preventing bubble-oil contact. This research has advanced our mechanistic understanding of how bubbles and oil droplets interact in aqueous systems and offers useful insights to modulate such interactions in oil production, water treatment and other interfacial processes.

关键词： Surface interactions Bubbles Oil droplets Flotation Interfacial Forces Emulsion

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Study on Flow Behavior and Adsorption Characteristics of Encapsulated Polymer Particles

Study on Flow Behavior and Adsorption Characteristics of Enc...

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2025 International Petroleum Technology Conference, IPTC 2025

作者： liu, Yongsheng Wei, Bei Hou, Jian Zheng, Ningyu Qin, xuwen Zhang, Yang Guo, Zhixin Zhang, Dequan National Key Laboratory of Deep Oil and Gas China University of Petroleum East China Shandong Qingdao China School of Petroleum Engineering China University of Petroleum East China Shandong Qingdao China

ISBN: (纸本)9781959025436

Encapsulated polymer refers to Micro/Nano-scale particles with polymer as the core, which can release the polymer to achieve thickening. Encapsulated polymer flooding is a new type of deep profile control technology suitable for further improving the oil recovery of conventional reservoirs. However, the adsorption and temporary blockage behaviors of encapsulated polymer particles in porous media significantly affect the accurate description of their targeted viscosity enhancement. On this account, we investigated how encapsulated polymer particles adsorb and temporarily block. Using PDMS material microfluidic chips, we investigated the flow behavior of encapsulated polymer in seven different pore throat structures. High-precision pressure sensors and microscopes were employed to real-time capture microscopic flow images of microcapsule particles inside single micro-channels and observe pressure fluctuation characteristics. Based on particle image velocimetry (PIV) systems, we studied the diverting fluid behavior in parallel micro-channels with different width ratios. Building on this, we conducted dynamic adsorption experiments to quantitatively characterize the adsorption and retention behavior of encapsulated polymer particles in porous media. In this study, we observed four phenomena of free flow, surface adsorption, blockage, and multi-particle aggregation slug flow during the flow of encapsulated polymer particles in a single microchannel. In parallel microchannels, the capsule particles exhibited selectivity towards flow paths, primarily entering wider throats. With the increase of the width ratio, the encapsulated polymer particles in the narrow throat are more confined and are more likely to accumulate in the throat and cause blockage. Experiments in porous media show that the adsorption and retention of capsule particles are inversely proportional to the permeability. The particles are more inclined to flow along the high permeability dominant channel. The

关键词： Microfluidics

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